Hi,
I have used several X-trans cameras. I have at present the XT-2. Regarding the worms effect on foliage etc have you compared the out of camera Jpeg to your raw file?. I have always found some sort of worming effect on small leaves and foliage is present with my out of camera jpegs ( using default settings ). I find that the Acros simulation shows this up really well. I am beginning to think that it is a quirk of the Fujifilm Xtrans sensor perhaps. The "worms" are also present with my little X30 too.
Cheer ian.